Apparatus for ejecting ashes and other refuse ships.



I 1. J. TREWENT 1; W. E. PROCTOR. APPARATUS FOR EJEGTING ASHES AND OTHERREFUSE FROM SHIPS.

APPLIUATION 4FILED MAB..2, 1910. 1,014,921

Patented Jan. 16, 1912.

5 SHEETS-SHEET 1.

F. J. TRBWENT & W. E. PROOTOR. E AAPMEETUS EOE EJEGTING AsHEs AND OTHEREEEUSE EEoM SHIPS. APPLICATION FILED MAR. 2, 1910.

5 SHEETS-SHEET 2.

Patented Jan. 16, 1912.

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APPLICATION FILEDKMALZ, 1910. 1,014,921, Patented Jan.16,1912.

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F. J. TREWENT & W. E. PROCTOR. APPARATUS EOE EJEGTING AsHEs AND OTHER-REFUSE FROM SHIPS.

APPLICATION FILED MAR.2, 1910.

1,014,92L Patent'd Jan. 16,1912.

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A .A v s v 9 L COLUMBIA PLANUGRAPH C0..WASH1NOTDN. D. C.

I'. J. TREWBNT & W. E. PROGTOR. APPARATUS EOE EJEGTING AsHEs AND OTHEREEEUSE EEoM sEIEs. APPLICATION FILED MAR.2, 1910.

1,014,921, Patented Jan.16,1912.

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rn srArEs PATENT orare.

FRANCIS JAMES TREWENT AND WILLIAM EDWARD PROCTOR, OF LONDON, ENGLAND.

APPARATUS FOR EJECTING ASI-IES AND OTHER REFUSE FROM SHIPS.

To all whom it may concern:

Be it known that we, FRANCIS JAMEs TRIIWENT and WILLIAM EDWARD PRooToR,both of 43 Billiter Buildings, Billiter street, London, England, navalarchitects and consulting engineers, have invented certain new anduseful Improvements in and Relating to Apparatus for Ejecting Ashes andother Refuse from Ships, of which the following is a specification. i

This invention relates to apparatus for ejecting ashes and other refusefrom ships, wherein the ashes are sent into an ejector chamber that isflooded or partly flooded with water entering from the sea, which wateris expelled from this chamber by a current of pressure water serving toeject the ashes or refuse admitted to the said ejector chamber.

According to the invention we dispose water nozzles in the ejectorchamber at points around a ring or rings so that the path of the refuseto be ejected passes through the space between the nozzles in suchmanner that the refuse ejected from the chamber is embraced or inclosedby a How of water, whereby the ashes are kept toward the center and awayfrom the sides of the discharge pipe. By this means the greatdisadvantage hitherto caused by the scouring and heavy wear produced bythe grinding of the ashes against the sides of the discharge pipe andagainst corners or angles thereof under the action of the water underhigh pressure is prevented. The said nozzles will usually be disposedconvergently s0 as to direct their jets of water convergently toward theaxis of the discharge pipe in the direction of the discharge, and theyare preferably supplied with high pressure water and serve to deliverthe main ej ecting water current. Some of the said nozzles may besupplied with high pressure water and others with water admitted fromthe sea, or with low pressure water, the nozzles being disposedsymmetrically about the path of the refuse between them. If desired,each nozzle of the ring may be a compound nozzle having concentricpassages supplied respectively with high pressure water and with sea oflow pressure water so as to discharge a jet of high and low press surewater. Two nozzles disposed at opposite points of a ring may beemployed, but

Specification of Letters Patent.

Application filed March 2, 1910.

Patented Jan. 16, 1912. Serial No. 546,897.

it is preferable 'to employ three or more of them.

Above or behind the nozzles disposed at points of a ring we may disposea nozzle or nozzles arranged so as to discharge through the ejectorchamber; the same may be an axial nozzle or a concentric annular nozzleor a plurality of nozzles. Said nozzle or nozzles will usually besupplied with sea water or low pressure water'. Such combinedarrangement, like those in which some nozzles of a ring are suppliedwith high pressure water and others with sea or low pressure water, orthose in which compound high or low pressure nozzles are used,

has the advantage of increasing the cih-- ciency of the apparatus bysupplementing the ejecting action of the pressure nozzles and serving toincrease the volume and therefore the velocity of the current of waterAand ashes passing through the bottom or side of the ship. In some casesthe nozzles disposed at points of a ring may be supplied with sea or lowpressure water and the nozzle or nozzles disposed above or behind themas described may be supplied with high pressure water.

The invention also consists in arranging the inlet to the ejectorchamber and the outlet from the refuse receptacle to be cut off byvalves adapted to open and close automatically, according to thepressure of the pressure water, in such manner that the ej ector chambervalve opens at a lower pressure than the refuse receptacle valve, sothat the cut off of the ejector chamber is opened before that of therefuse receptacle, and conversely that when the pressure falls therefuse receptacle is closed before the ejector chamber. By this meansthe sea is prevented from passing inward beyond the ejector chamber andthe opening and closing of the refuse receptacle and the ejector intheir proper sequence are automatically insured. In conjunction withsuch an arrangement we may provide a jet or jets of water arranged so asto act automatically to wash the connection between the ash or refusereceptacle and the ejector chamber, and the seat of the ejector chambervalve in the period between the closing of the refuse receptacle and theejector chamber.

The invention also consists in the provision between the refusereceptacle and the per.

ejector chamber of a revoluble valve adapted throughout its rotation topass the ashes to the ejector chamber from the receptacle, butnevertheless to be closed in every position to the passage of sea water.Said revoluble valve may be rotated by hand or mechanically, and therotation of the valve may be controlled by automatic means, so as tostop the rotation when the force of the pressure water driving out thesea water falls to a predetermined degree.

In the accompanying drawings z--Figures l to 6 are diagrammatic sectionsshowing various arrangements of nozzles in conjunction with an ejectorchamber in accordance with the invention. Fig. 7 is a sectionalelevation illustratinga form of apparatus wherein the inlet to theejector chamber and the outlet from the refuse receptacle are arrangedto be cut off by valves adapted to open and close automaticallyaccording to the pressure water, in a manner as above mentioned. Fig. 8is a detail section of a form of valve gear adapted to control theopening and closing of the valves of Fig. 7 in their proper sequence.Fig. 9 is a detail of modified arrangement of valve gear. Fig. lO is asectional elevation of apparatus provided with one form of revolublevalve of the described character between the refuse receptacle and theejector chamber; Fig. ll is a sectional elevation of apparatus providedwith another form of revoluble valve of the described character betweenthe refuse receptacle and the ejector chamber. Figs. 12 and 13 arediagrammatic views of the apparatus illustrating means for automaticallyactuating the valve 42 shown in Fig. 10, the automatic means being shownin enlarged section.

Referring to the construction shown in Fig. 1, a represents the hopperfor the ashes or refuse, .7) is the ejector chamber, having a dischargec through the bottom or side of the vessel, (Z d represent a ring ofnozzles in the ejector chamber and through which the ashes from thehopper a pass, so as to be embraced by the water jets in the mannerexplained, e is an annular passage through which pressure water issupplied to the ring of nozzles from the supply pipe g represents avalve between the hopper and the ejector chamber, and 7L' represents avalve in the discharge pipe near the ships bottom.

In the modified construction shown in Fig. 2, the hopper a is disposedto one side of the apparatus and an additional nozzle j is disposed overthe ejector chamber and axially of the ring of nozzles CZ, through whichthe ashes pass when discharged from the hop- In this construction thenozzle j may be supplied with pressure water and the nozzles Z Vwith seawater, or if desired the nozzle may be supplied with sea water and thenozzles d with pressure water, or any of the nozzles may be of thecompound type as shown in Fig. 5.

In the construction shown in Fig. 3 there are two annular passagesarranged within the ejector chamber, one passage e adapted to besupplied with pressure water through. the pipe f and the other passage cadapted to be supplied with sea water through the passage m. In thisconstruction some of the nozzles in the ring d through which the ashesdischarge as before, are supplied with pressure water and some with seawater; these nozzles may be concentric or be placed one above the other,or the nozzles may be of the compound type as shown in Fig. 5.

In the construction shown in Fig. 4 there is a ring of nozzles cladapted to be supplied with pressure water from the supply pipe f, inconjunction with an annular nozzle n adapted to be supplied with seawater from the supply pipe m; or the annular nozzle may be supplied withpressure water and the ring of nozzles with sea water, or the ring ofnozzles may be compound nozzles. The ashes from the hopper a dischargethrough the ring of nozzles d as before, so as to be embraced by thejets thereof.

Other combinations of nozzles embodying the principle of rings of jetsthrough which the ashes passing through the ejector chamber discharge,may of course be arranged.

Two or more nozzles disposed opposite to one another and dischargingdown a common discharge pipe so that the refuse passes between them andis embraced by their jets may be used if desired, and may be consideredas a ring for the purpose of this invention, but we prefer to use morethan two. One or more of such nozzles may be supplied with pressurewater and one or more with sea water, or a pressure nozzle and acompound nozzle disposed in the manner described may be employed.

Fig. 5 shows a compound nozzle adapted for use in apparatus-made inaccordance with this invention. This comprises a nozzle 0 adapted to besupplied with pressure water through the pipe p and a nozzle g adaptedto be supplied with sea water through the pipe r or vice versa. Nonovelty is claimed for this type of nozzle per se.

Fig. 6 shows a similar arrangement to Fig. l but'with the discharge pipec provided with an annular chamber s adapted to be supplied with seawater or pressure water through the pipe t.

o e are openings or nozzles in the dis charge pipe, the flow of waterthrough these nozzles further'assists the discharge and protects thesides of the pipes from scouring when ashes are passing down same.

Referring to the apparatus shown in Fig. 7, the ashes may be crushed orground by 'any well-known device if desiredbefore being deposited in thehopper a.

is the ejector chamber as before, provided with a ring of nozzles d (Zthe jets whereof embrace the ashes discharged through the chamber .7).

c is the discharge pipe which passes through the bottom of the vessel.The ej ector chamber b is connected to the hopper a by means of anadmission pipe 4. The nozzles cl in the chamber b are supplied withpressure Water from a donkey pump or other convenient source. The valveor cock 5 is adapted to be turned manually by the lever 6 or otherwise,to open and close the passage between the admission pipe 4 and theejector chamber b. Vithin the cock 5 is disposed a safety valve 7 of theplunger type, provided with nozzles 8. The valve 7 is adapted to openand close the passage between the admission pipe 4 and the ejectorchamber b. The `valve 7 is raised by means of the piston 9 working inthe hydraulic cylinder 10. An automatic ash con; trol valve 11 isdisposed at the base of the hopper a. This valve is pivoted at 12 andweighted at 13 so as to keep the hopper closed; the valve 11 is openedby the plunger 14 working in the hydraulic cylinder 15.

The nozzles (Z for discharging the jets that inclose or embrace theashes passing through the chamber b are supplied with pressure Waterthrough the pipe 16 and the nozzles 8 are adapted to be supplied withsea Water through the pipe 17. Strainers not shown may be disposed inthe pressure and sea -than the valve 51.

water pipes to prevent the nozzles from becoming choked.

18 is the automatic valve gear, which is illustrated in detail in Fig.8.

19 is a pressure water pipe leading from the supply chamber 16a ofthenozzles (Z to the automatic valve gear to which it is connected bybranches 19a, 19h, connected respectively to small valve cylinders 52,53, in which work plunger valves 50 and 51, kept normally closed byadjustable springs 58, 59, through the medium of loose stems 54, 55,working in guides 56, 57, and the extensions`60, 61 of which passthrough holes in the plungers 50 and 51.

20 fis a pressure pipe leading from the connection 62 of valve cylinder52 to the hydraulic cylinder 10 under the piston 9 that operates thesafety valve 7. j

22 is a pressure water pipe leading Vfrom the connection 68 of valvecylinder 53 to the' hydraulic cylinder 15 of the ash valve operatingpiston 14. A pressure gage P is connected to the pipe 19. The valve 50is adjusted to be lifted with less pressure This insures that the safetyvalve 7 will be opened before the ash valve 11, and closed after the ashvalve 11 has closed. When the valve 5() has been allowing the valve 7 toclose.

raised, pressure water passes by the port 63 to below the operatingplunger 9 of the safety valve 7. Should the pressure fall, the plunger50 drops and opens communication between 62 and the exhaust 64, thusShould the spring 58 break, the stein 54 will be blown out, plunger 50will fall, closing the port 63 and opening the exhaust 64 and allowingthe valve 7 to close. The plunger 51 works in a similar manner toplunger 50, allowing the ash controlling valve 11 to close when thepressure falls or the spring 59 breaks. 64 is the corresponding exhaust.Adjustable weights or any other well known device may be used instead ofsprings for controlling the valves 50 and 51, or the valves may be ofdierent areas if desired.

26, 27 represent pipes connected to the interior of the valve 5 andserving to lead sea Water therefrom (when supplied by the pipe 17) anddeliver the same at 26a and 27 a into the connection between the hoppera; and ejector chamber b for the purpose of assisting the passage of theashes. The flush pipes 26, 27 might be supplied with pressure water ifdesired.

24 is a stop valve disposed in discharge pipe so as to shut offcommunication with` the sea if desired, either automatically or by hand.The bevel gears 24a, 24b and shaft 2.4c serve for operating the valve.

In operation, when starting the apparatus, the ash valve 11, the cock 5and the safety valve 7 are shut, and the stop valve 24 100 is opened,thus permitting sea water to pass into the ejector chamber Z). The pumpis then started and pressure water supplied to the nozzle l at asutlicient pressure to drive the sea water out of the chamber b. Inti-105 mation that this has occurred is given by the sound of air beingdrawn through the snift valve 25. The pressure is then raised to openthe valve 50 and thereby operate pis'- ton 9 and raise the safety valve7 at the dis- 110 charge end of the admission pipe 4. The pressure isthen further raised, whereupon the valve 51 is lifted, the plunger 14operated and the ash valve 11 at the base of the hopper opened. The cock5 may now be 1715 opened by the lever 6. The ashes in the hopper a arenowpermitted to pass down the admission pipe 4 to the ejector chamber 5,the passage thereof being assisted by the jets from the pipes 26 and 27.The supply of 120' water to the pipes 26 and 27 may be controlledautomatically, 26 to close when the valve 11 closes, and 27 to closewhen the plunger 7 closes. As soon as the ashes emerge from theadmission pipe 4 they are 125 discharged through the bottom of thevessel by the jet-s issuing from the nozzles 8 and ci. The discharge maybe effected ver' tically, horizontally, or at any angle. The pressure ispreferably maintained sufliciently high to insure the valves 11 and 7being kept open after the operation has started. Should the pressurefall below the pressure at which the ash valve 11 at the base of thehopper a was opened, the plunger 14 is the tirst to fall, thus closingthe valve 11 and preventing the ashes from descending into the admissionpipe. The jets from the pipe 27 will continue to iow until the pressurefalls sufficiently low to allow the valve 7 at the discharge end of theadmission pipe to fall and close. The flow of water from the pipe 27after the admission of ashes has been stopped, effectually clears theadmission pipe of ashes before the valve 7 is closed. Once this valve isclosed there is no fear of any back flooding due to a further fall inthe pressure of the water. The hopper is provided with a hinged rubberjointed cover 28 which can be secured by bolts 29.

Fig. 9 illustrates a similaiarrangement to that shown in Fig. 8, exceptthat only one spring is provided, the valve operating the safety valvebeing adjusted to open before the valve controlling the ashes, byregulating the position of the spring 65 on the cross lever 6G. Thespring can be arranged in compression instead of tension. If required asingle automatically operated valve may be used to close the passagethrough which the ashes travel from the hopper to the ejector chamber.

- Figs. 10 and 11 illustrate forms of the apparat-us in which amechanically revoluble valve adapted throughout its rotation to passvthe ashes to the ejector chamber, but nevertheless constantly closed tothe passage of sea water, is litted between the hopper and the ejectorchamber.

In the form shown in Fig. 10, a conical plug 42 provided wit-h vanes 42ais revolubly mounted below the hopper a. The valve 42 thus in allpositions prevents the passage of sea water past it, but at the sametime it can pass the ashes continuously during its rotation. The vanesof the valve 42 are shown as arranged spirally for the purpose ofcrushing ashes which may get caught. The inlet of the ashes to theejector chamber is controlled by a rotary valve 5 and a plunger 7operated by the pressure water by means of a piston 9 and cylinder 10 asbefore. The valve 42 may be rot-ated by any suitable means. The rotationof the valve 42 may be controlled by automatic means so as to stoprotating when the pressure of the pressure water falls to apredetermined head, so as to cut off the supply of ashes before theplunger 7 falls. Suitable means for the purpose are shown diagrammati-'cally in Fig. 12, in which the cock 42 is driven electrically by amotor through suitable gear, and the electric current to the motor isinterrupted by an ordinary electric make and break contrivance operatedby a spring-pressed plunger 100 having an insulating cap 100a andsubject to the action of the pressure water in a chamber 101 connectedto a pipe 102 in connect-ion with the delivery pipe from the pump to theejector nozzles cl. The pressure of the pressure water keeps the plunger100 raised and holds the contact 103 against the contact 104, but whenthe pressure falls below the determined limit as adjusted by the springof the valve, this releases the contact 103 and the circuit is broken.Fig. 13 shows diagrammatically another form of controlling arrangementsuitable in cases where the valve 42 is driven by a steam engine. In

this case in addition to the ordinary steam stop valve on the engine, acontrivance as shown would regulate the supply of steam to the engine105. The pipe 102 connected to the delivery pipe from the pump to theejectornozzles would againlead to a chamber 101a in which works aspring-pressed piston 100b the rod of which carries a piston valve 106adapted to open and close the passage of the steam to the engine throughthe supply pipe 107. By adjusting the spring, the piston valve 106 canbe made to lift at any required water pressure and permit steam to passto the engine, and to close at a predetermined all of pressure. Thepassage of the ashes down the admission pipe 4 is assisted by a jet orjets of water from the pipe 27b which is supplied with pressure or seawater; the supply of water to this pipe may be controlled automaticallyto stop when the plunger 7 closes. A snift valve 250 is provided beneaththe cock 42. The other reference characters on the figure indicate partscorresponding to those in Fig. 7.

The apparatus shown in Fig. 11 is similar to that of Fig. 10, exceptthat the rotary valve for passing the ashes to the ejector chamber is inthe form of a double or multiple threaded screw conveyer 420 mounted ina cylindrical casing 4a closely embracing the same. Such a conveyerwhile passing the ashes while it rotates will nevertheless always beclosed against the passage of sea water. The conveyer may be rotated byany suitable means. The conveyer may be incased in a cylinder and rotatetherewith in a cylindrical chamber if desired, or it may simply rotatein a cylindrical chamber as shown. The conveyer may be tapered ifdesired, for adjustment, or it may be disposed horizontally, vertically,or at any desired a-ngle. The conveyer 420 or the valve 42 (Fig. 10) maybe operated by mechanism worked by sea water or otherwise.

In Fig. 7 there is shown between the ejector chamber b and the stopvalve 24 a length of pipe 67 which may be tted with a renewable liner67a.

The apparatus may be employed for discharging the contents of waterclosets below water. level.

What we claim and desire to secure by Letters Patent is :'n

1. In apparatus for ejecting ashes or other refuse from ships, thecombination with an ejector chamber through which the refuse passes andadapted to be flooded with water, of a plurality of water nozzlesdisposed in said chamber about the path of the refuse therethrough,whereby the rfuse is embraced by the water jets from said nozzles,substantially as and for the purpose described.

2. In apparatus for ej ecting ashes or other refuse from ships, thecombination with an ejector chamber through which the refuse passes, andadapted to be flooded withwater, of a plurality of ejecting nozzlesdisposed in said chamber about the path of the refuse therethroughwhereby to embrace the refuse by the jets from said nozzles, and meansfor supplying pressure water to said ejecting nozzles, substantially asand for the purpose described.

3. In apparatus for ejecting ashes or other ilrefuse from ships, thecombination with an ejector chamber through which the refuse passes, andadapted to be flooded with water, of a ring of water nozzles disposed insaid chamber about the lpath of the refuse through said chamber, wherebyto'embrace the refuse by the jets from said nozzles, substantially asand for the purpose described.

4. In4 apparatus for ejecting ashes and other refuse from ships, thecombination with an ejector chamber through which the refuse passes, andadapted to be flooded with water, of a ring of ejecting nozzles disposedin said chamber about the path of the refuse therethrough, whereby toembrace the refuse by the jets from said nozzles, and means forsupplying pressure water to said ejecting nozzles, substantially as andfor the purpose described.

5. In apparatus for ejecting ashes or other refuse from ships, thecombination with an ejector chamber through which the refuse passes andadapted to be flooded with water of a plurality of water nozzlesdisposed in said chamber about the path of the refuse therethrough,whereby the refuse is embraced by the water jets from said nozzles, anda water nozzle located to discharge through the ejector chamber frombehind the said plurality of nozzles, substantially as described.

6. In apparatus for ej ecting ashes or other refusefrom ships, thecombination with an 'ejector chamber through which the refuse passes,and adapted to be flooded with water, of a plurality of water nozzlesdisposed in said chamber about the path of the refuse therethrough,whereby to embrace the discharging refuse by the water jets from saiddisposed in said chamber about the path of` the refuse therethrough,whereby to embrace the discharging refuse by the water jetV therefrom,substantially as described.

7. AIn apparatus for ejecting ashes or other refuse from ships, thecombination with an ejector chamber through which the refuse passes, andadapted to be flooded with water, of a plurality of ejecting nozzlesdisposed in said chamber about the path of the refuse therethrough, anauxiliary nozzle located behind said ej ecting nozzles, means forsupplying pressure water tolsaid ejecting nozzles, and means forsupplying sea water to said auxiliary nozzle, substantially asdescribed.

8. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, `a discharge outlet from theship, an ejector chamber located between said container and outlet, andaplurality of water nozzles located in said ejector chamber about thepath of the refuse therethrough whereby to embrace the dischargingrefuse by the jets from said nozzles, substanti ally as described.

9. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, a discharge outlet from theship, an `ejector chamber located between 'said container and outlet,means for supplying pressure water to said ejector chamber, a refusedischarge con'- nection between said container and said ejector chamber,a Valve for controlling the outlet of the refuse from the container anda valve controlling the inlet of the refuse to the ejector chamber,means operated by the pressure of the pressure water for opening andclosing said valves, said means being adapted in the rise of pressureofthe water, first to open thev said inlet Valve' to the ejector chamberand afterward said outlet v'alve from the container, and to close saidvalves in converse order in the fall of pressure of the water;

10. In apparatus for ejecting ashes or other Vrefuse from ships, thecombination of a container for the-refuse, a discharge outlet from theship, an ejector chamber located between said. container and outlet,means for supplying pressure water to said ejector chamber, a refusedischarge connection between said container and said ejector chamber,'avalve for controlling the outlet of the refuse from the container and aValve controlling the inlet of the refuse to 'the ejector chamber, meansoperated by the pressure of the pressure water for opening and closingsaid valves, said means being adapted in the rise'of pressure of thewater, first to open the said inlet valve to the ejector chamber andafterward said outlet valve from the container, and to close said valvesin con- Verse order in the fall of pressure of the water, and anautomatic flushingjet adapted to flush the said connection and the seatof the refuse inlet valve to the ejector chamber, in the period betweenthe closing of said Valves.

11. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, a discharge outlet from theship, an ejector chamber located between said container and outlet,means for supplying pressure water to said ejector chamber, a refusedischarge connection between said container and ejector chamber and arevoluble valve adapted .throughout its rotation to pass the refuse fromthe container to the ejector chamber while remaining closed to thepassage of sea water.

12. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, a discharge outlet from theship, an ejector chamber located between said container and outlet,means for supplying pressure water to said ejector chamber, a refusedischarge connection between said container and ejector chamber and arevoluble valve adapted throughoutl its rotation to pass the refuse fromthe container to the ejector chamber while remaining closed to thepassage of sea water, mechanical means for rotating said revolubleValve, and means controlled by the pressure of the pressure water, forstopping the rotation of said revoluble valve at a predeterminedpressure, substantially as described.

13. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, a discharge outlet from theship, an ejector chamber located between said container and outlet, aplurality of ejecting nozzles disposed in said chamber about the path ofthe refuse therethrough whereby to embrace the discharging refuse by thejets from said nozzles, a refuse discharge connection between saidcontainer and ejecting chamber, a revoluble valve adapted throughout itsrotation to pass the refuse from the container to the ejector chamberwhile remaining closed to the passage of sea water, a safety valve forclosing communication between the said connection and the ejectorchamber, means for supplying pressure water to said nozzles and meansfor closing said safety valve automatically at a predetermined pressureof the pressure water, substantially as described.

14. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, a discharge outlet from theship, an ejector chamber located between said container and outlet,means for supplying pressure water to said ejector chamber, a refusedischarge connection between said container and ejector chamber, arevoluble Valve furnished with peripheral ribs, adapted throughout itsrotation to pass the refuse from the container to the ejector chamberwhile remaining closed to the passage of sea water, and means forrotating said plug, substantially as described.

15. In apparatus for ejecting ashes and other refuse from ships, thecombination of a container for the refuse, a discharge outlet from theship, an ejector chamber located between said container and outlet, aplurality of 'nozzles disposed in said chamber about the path of therefuse therethrough, a refuse discharge connection between saidcontainer and ejector chamber, a revoluble Valve adapted throughout itsrotation to pass the refuse from the container to the ejector chamber, asafety valve for closing communication between said con? nection and theejector chamber, means for supplying pressure water to said nozzles,means for closing said safety Valve automatically at a predeterminedpressure of the pressure water, means for rotaing said revo- A lublevalve mechanically, and means for stopping its rotation automatically ata predete'rmined pressure of the pressure Water, substantially asdescribed.

16. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, a discharge out let from theship, an ejector chamber located between said container and outlet, aplurality of nozzles disposed in said chamber about the path of therefuse therethrough, a refuse discharge connection between saidcontainer and ejector chamber, a safety valve for opening and closingcommunication between said connection and the ejector chamber, passagesin said safety valve and communicating with the ejector chamber, meansfor supplying. pressure water to said nozzles, means for supplying seawater to said ejector chamber through the passages in said safety Valve,and means for closing said safety Valve automatically to shut off theash connection from the ejector chamber at a predetermined pressure ofthe pressure water substantially as described.

17. In apparatus for ejecting ashes or other refuse from ships, thecombination of a container for the refuse, a discharge outlet from theship, an ejector chamber located between said container and outlet, aplurality of nozzles disposed in said chamber about the path of therefuse therethrough, a refuse discharge connection be tween saidcontainer and ejector chamber,

a safety valve for opening and closingicomchamber, -means for supplyingpressure Water to said nozzles, means for supplying sea Water to saidejector chamber through the passages in said safety valve, a revolublevalve adapted throughout its rotation to pass the refuse from thecontainer to the ejector chamber, means for shutting said safety valveautomatically at a predetermined pressure of the pressure Water, meansfor rotating said revolulole Valve mechanically, and means for stoppingits rotation automatically at a predetermined pressure of the pressureWater, substantially as described.

In Witness whereof, We have hereunto signed our names in the presence oftwo sub- Copies of this patent may be obtained for ve cents each, byaddressing the Commissioner vof Patents, Washington, I). C.

